Aspects of volumetric efficiency measurement for reciprocating engines

The volumetric efficiency significantly influences engine output. Both design and dimensions of an intake and exhaust system have large impact on volumetric efficiency. Experimental equipment for measuring of airflow through the engine, which is placed in the intake system, may affect the results of...

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Bibliographic Details
Published in:Thermal science 2013, Vol.17 (1), p.35-48
Main Authors: Pesic, Radivoje, Davinic, Aleksandar, Petkovic, Snezana, Taranovic, Dragan, Miloradovic, Danijela
Format: Article
Language:English
Subjects:
Air flow
Diameters
Diesel engines
Efficiency
Exhaust systems
Flow control
Intake pipes
Intake systems
Orifice meters
Orifices
Piston engines
Pressure measurement
Volumetric efficiency
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Summary:The volumetric efficiency significantly influences engine output. Both design and dimensions of an intake and exhaust system have large impact on volumetric efficiency. Experimental equipment for measuring of airflow through the engine, which is placed in the intake system, may affect the results of measurements and distort the real picture of the impact of individual structural factors. This paper deals with the problems of experimental determination of intake airflow using orifice plates and the influence of orifice plate diameter on the results of the measurements. The problems of airflow measurements through a multi-process Otto/Diesel engine were analyzed. An original method for determining volumetric efficiency was developed based on in-cylinder pressure measurement during motored operation, and appropriate calibration of the experimental procedure was performed. Good correlation between the results of application of the original method for determination of volumetric efficiency and the results of theoretical model used in research of influence of the intake pipe length on volumetric efficiency was determined.
ISSN:0354-9836
2334-7163
DOI:10.2298/TSCI120531153P